Apparatus for tempering glass



Dec. 29, 1936. B. LONG 2,065,862

APPARATUS FOR TEMPERING GLASS Filed March 14, 1933 FIG. 1.

FIG. 5.

awn/m0 404/0 Patented Dec. 29, 1936 UNITED STATES APPARATUS FORTEMPERING GLASS Bernard Long, Paris, France, assignor, by mesneassignments, to The American Securit Company, a corporation of DelawareApplication March 14, 1933, Serial No. 660,753

. In France March 24, 1932 2 Claims. (01. 49-45) In a prior applicationfiled by me I have described the advantages in tempering sheet glass byshifting the points of application of the blasts of air to the sheets.

The presentapplication has for its end to provide an efiicient meanswhereby the points of impact of the jets upon the sheet are shiftedduring the cooling of the sheet by utilizing a perforated rotaryair-distributing plate. My invention for these purposes consists in theconstruction, arrangement and combination of the several parts as willbe hereinafter morefully described and claimed.

Referring to the accompanying drawing in which corresponding parts aredesignated by corresponding marks of reference,-

Figure 1 is a vertical section through an apparatus embodying myinvention.

Figures 2, 3 and 4 are details of different forms of distributor platesthat may be used with my invention. 4

In the drawing a represents a sheet of glass to be tempered. This sheet,as now known in the art, should be at a relatively high temperature. Itisseated between two cooling elements, only one :i which is shown andonly one of which will be described, as such elements are identical.Each element consists of an air conduit I having a bell-mouth 11. whosediameter is at least as great as the major diagonal of the sheet to betempered. Cooling air under pres- I sure is forced through the conduitand out of the bell-mouth.

Mounted in the mouth of the conduit is a distributing plate b, the platebeing carried on the horizontal shaft g in suitable bearings 12 and'jand being driven by any suitable means, such as by the pulley k. Thedistributor plate runs in an annular channel I surrounding the interiorof the bell-mouth.

The distributor plate b is perforated, the holes being 01 selected sizeand of any desired shape.

In Figure 2 are shown circular holes so distributed that their numberincreases proportionally with their distance from the center.

In Figure 3 the holes are shown as elongated to form radial triangularslots with their apexes pointing inwardly, the eflective width of the 5slots being regulated by shutters r slidable on the distributor plate bymeans of pins 8 moving in slots t.

In Figure 4 the orifices are furnished with nozzles u inclined to theaxis of rotation of the 10 disc. The nozzles near the center of the discare, as shown, more inclined to the axis of rotation thereof than thosemore remote from the center for the purpose of accentuating the move-*ment of the points of contact with the sheet of 15 air from the nozzlesnear the center of the disc and also for the purpose of neutralizing toa greater or less extent the centrifugal force of the air drawn along bythe rotation of the disc.

Interposed between the bell and the sheet of 20 glass is shown a maskingdiaphragm q. This diaphragm is removable and has an opening therein of asize and shape suitable for the size and shape of the glass to betempered.

Having thus described my invention what I 25 claim as new and desire tosecure by United States Letters Patent is,--

1. In a device for tempering glass sheets, the combination of a seriesof nozzles rotating around a center, the nozzles adjacent to such centerbe- 30 ing more inclined to the axis of rotation than are the nozzlesremote from such center and conduit supplying air to said nozzles.

2. In a device for tempering glass sheets the combination of .twoconduits facing each other, 5 means for supporting a sheet of glassbetween the ends of the conduits, a rotating distributing plate at theend of each conduit, triangular slots in the said plates, damperscarried by the plates controlling the width of the slots;- and means forrotating said plates.

BERNARD LONG.

